Please run the attached sample project, open the drop down and press the down arrow key.

Observed: application hangs

Expected: since all menu items in the drop down are disabled, nothing is expected to happen. However, the application shouldn't hangs.

Workaround:

public class CustomRadDropDownButtonElement : RadDropDownButtonElement
{
    protected override Type ThemeEffectiveType
    {
        get
        {
            return typeof(RadDropDownButtonElement);
        }
    }
    protected override RadDropDownButtonPopup CreateDropDown()
    {
        return new CustomDropDown(this);
    }
}

public class CustomDropDown : RadDropDownButtonPopup
{
    public CustomDropDown(RadElement ownerElement) : base(ownerElement)
    {
    }

    protected override void EnsureItemEnabled(RadItem item, bool isUp)
    {
        do
        {
            item = this.GetNextItem(item, !isUp);
            if (item == this.Items.Last())
            {
                break;
            }

        } while (!item.Enabled);
        if (item != null)
        {

            this.SelectItem(item);
        }
    }
}

Repro steps:

1. Make a datatable with a string-column with a max. length of 10 characters.
2. Add a row with a string of max. 10 characters.
3. Bind it to a RadGridView
4. Add an event-handler to DataError which will cancel the action if a data error occurs.
5. In the UI, enter data into the cell. Make it longer than 10 characters.

Expected behavior:

1. The same behavior as CellValidating.
2. De user stays inside the editor so it can modify the text.

Observed behavior:

1. The editor is closed, the new text is not displayed.

Report steps:

1. Make a datatable with a string-column with a max. length of 10 characters.
2. Will the datatable with some data.
3. Bind it to a RadGridView
4. In Excel (or another applicatie) create a now table with some strings, this time longer that 10 characters.
5. Paste this data from Excel to the RadGridView

Expected behavior:

1. The strings that are to long will either cause an exception or they are truncated.

Observed behavior:

1. The string with the value that is to long is skipped during pasting.

Extra detail:

In the method MasterGridViewTemplate.PasteDataToRow the next piece is code is located:

if (CurrentView.ViewTemplate.Columns[columnIndex].DataType == typeof(string))
{
    if (column is GridViewTextBoxColumn viewTextBoxColumn && viewTextBoxColumn.MaxLength > 0 && rowData[rowIndex].Length > viewTextBoxColumn.MaxLength)
        obj = rowData[rowIndex].Substring(0, viewTextBoxColumn.MaxLength);
}

Use the attached sample project.

Sceen 1 (Screen with program shortcuts) on the right in the gif: this screen has display scale 125%

Screen 2 (Screen with the Form) on the left in the gif: this screen has display scale 100%

When all three toolwindows are placed in the forms, there is no issue. The Dropdown list of ToolWindow1 (floating, dockable..) when opened is placed correctly.

If I moved the ToolWindow3 from Screen2 to Screen1 and make it the most recent active window (by clicking on it), I go back to the Screen2 and open the dropdown list of Toolwindow1, this list's position is now wrong and the text size bigger. This is because it takes the display scale (125%) of  the screen where the most recent active toolwindow (ToolWindow3 ) is.

If I popup the ToolWindow2, place it in Screen2 (the same screen with ToolWindow1), make ToolWindow2 the most recent active window, and open the dropdown list of Toolwindow1, this list's position is now correct and the text size normal. This is because it takes the display scale (100%)  of  the screen where the most recent active toolwindow (ToolWindow2 ) is.

Workaround: add app.manifest file and declare the application as DPI aware: 

Reproduction steps:

• Create a new RadPropertyGrid
• Add an instance of a class with at least one property of type Nullable<int>.
• The property does not have an DefaultValueAttribute.
• Make sure that property has the value null.
• In de UI, the field appears to be empty.
• In de UI, click on the field to edit it.

Observed behavior:

• An edit-box appears with the value zero (0).
• Leaving this field (without entering any digits) sets the property with that 0, which is undesirable.

Expected behavior:

• An empty edit-box appears, without any digits.
• Leaving this field (without entering any digits) should keep the property null.
  

When I create a new form-class, which derives from RadFrom, and I override the method OnLoad, then OnLoad is called during construction. This should never happen!

As Microsoft states: "The OnLoad method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class."

See: https://docs.microsoft.com/en-us/dotnet/api/system.windows.forms.form.onload?view=windowsdesktop-6.0 

The OnLoad method can be used to load controls with data. But these controls are not even initialized, because the method InitializeComponent has not been called yet.

Hi,

An HTTP Request returns me an error in HTML format. Please see img001. This image was capture in debug mode in Visual Studio.

When I want to show a MessageBox or a Label with this HTML, appears like in img002.

Thank you!

The HTML text is:

HI,

Exploring the Demo Winforms FilterView component a bug is present.

When you expand several categories ,the automatic Vertical Scroll bar is showed but the "Maximum"  property value is wrong.

You can't see all the items inside. Some items are hidden at bottom.

But if you collapse some category the new "Maximum" values takes the right previous value before collapsing showing more space as expected

I have a workaround to prevent this situation calling CategoryExpandedChanged event.

Firstly I need to call Application.DoEvents() in order to resizing internally by the component all the StackLayoutPanels connaining the Category Items 

After that, I call the private method UpdateScrollBars (Suggested by support) and the ScrollBar takes the right size for its content.

Now I can show all the contained items inside the FilterView panel.

FRC

public partial class RadForm1 : Telerik.WinControls.UI.RadForm
    {
        public RadForm1()
        {
            InitializeComponent();
            DataTable dt = new DataTable();
            for (int i = 0; i < 20; i++)
            {
                dt.Columns.Add("col" + i, typeof(string));
            }
            for (int i = 0; i < 10; i++)
            {
                DataRow r = dt.NewRow();
                foreach (DataColumn col in dt.Columns)
                {
                    r[col.ColumnName] = Guid.NewGuid().ToString();
                }
                dt.Rows.Add(r);
            }
            this.radFilterView1.DataSource = dt;
          
        }


        private void radFilterView1_CategoryCreated(object sender, Telerik.WinControls.UI.FilterView.FilterViewCategoryCreatedEventArgs e)
        {
            e.Category.ExpandedChanged += Category_ExpandedChanged;
            e.Category.Expanded = false;

        }

        private void Category_ExpandedChanged(object? sender, EventArgs e)
        {
            // You need pass the control to Windows main loop to perform the pending telerik events after property Expanded change in order to resize internally
            // the StackLayoutPanel Containers before calling UpdateScrollBars
            Application.DoEvents();
            // Now your code
            MethodInfo mi = typeof(RadFilterViewElement).GetMethod("UpdateScrollbars", BindingFlags.Instance | BindingFlags.NonPublic);
            mi.Invoke(this.radFilterView1.FilterViewElement, new object[] { this.radFilterView1.FilterViewElement.ElementsPanel.Size });
            // Hide the horizontal scrolll bar
            radFilterView1.FilterViewElement.HorizontalScrollBar.Visibility =ElementVisibility.Collapsed;
        }

    }

Use a custom font set like this: 

this.radSyntaxEditor1.SyntaxEditorElement.EditorFontFamily = new Telerik.WinControls.SyntaxEditor.UI.FontFamily("Cascadia Code");
this.radSyntaxEditor1.SyntaxEditorElement.EditorFontSize = 13;

Then load a large document, at least 10K lines so that the clipping is visible.

The solution in this KB article is used: https://docs.telerik.com/devtools/winforms/knowledge-base/clickonce-application-is-broken 

Follow the steps:

1. Set your main monitor to be with higher than 100% DPI scaling (e.g. 175%, 200%)

2. Set the secondary monitor with 100% DPI scaling.

3. Run the exe from the project on the secondary monitor with 100% DPI scaling. You will notice that all controls that host the standard MS TextBox are incorrectly scaled:

Setting the SyntaxEditorElement.HorizontalScrollBar.Visibility property to Collapsed indeed hides the horizontal scrollbar but it is still measured and arranged and overlaps the view if you shrink the view:

• I'm using Visual Studio 2022 Community. Running as Admin.
• I've installed the latest Winforms (Telerik_UI_For_WinForms_2022_1_222_Dev.msi)
• I open Visual Studio and select to create a Word-like project.
• The files are all created
• One nuget reference is present under Dependencies/Packages, but shows as unresolved (UI.for.WinForms.AllControls.Net60 (2022.1.222.0))
• Using the NuGet Package Manager, there is no Telerik package source present.

So, at this point this seems to be a possible bug. The template project did not setup correctly. I have literally done nothing other than download and install Telerik WinForms today and then try to create this project. This _should_ work or give me instructions of further setup that I have to do manually.

I did try a couple other things, but also failed to get things working.

• I tried to setup the Telerik Package Source as https://nuget.telerik.com/v3/index.json
• I was able to see various WinForms packages in the Package Manager, includes the one registered in the project. But VS won't update the project to resolve the package.
  
• I uninstalled the nuget package to try reinstalling it, but the re-install failed with the following messages

Restoring packages for C:\DevGit\pws\pws.core\pws.core\pws.core.csproj...
  GET https://nuget.telerik.com/v3/package/ui.for.winforms.allcontrols.net60/index.json
  GET https://nuget.org/FindPackagesById()?id='UI.for.WinForms.AllControls.Net60'&semVerLevel=2.0.0
  OK https://nuget.telerik.com/v3/package/ui.for.winforms.allcontrols.net60/index.json 90ms
  GET https://nuget.telerik.com/v3/package/ui.for.winforms.allcontrols.net60/2022.1.222/ui.for.winforms.allcontrols.net60.2022.1.222.nupkg
  NotFound https://nuget.org/FindPackagesById()?id='UI.for.WinForms.AllControls.Net60'&semVerLevel=2.0.0 147ms
  GET https://nuget.org/FindPackagesById()?id='UI.for.WinForms.AllControls.Net60'&semVerLevel=2.0.0
  NotFound https://nuget.org/FindPackagesById()?id='UI.for.WinForms.AllControls.Net60'&semVerLevel=2.0.0 42ms
  GET https://nuget.org/FindPackagesById()?id='UI.for.WinForms.AllControls.Net60'&semVerLevel=2.0.0
  NotFound https://nuget.org/FindPackagesById()?id='UI.for.WinForms.AllControls.Net60'&semVerLevel=2.0.0 40ms
  OK https://nuget.telerik.com/v3/package/ui.for.winforms.allcontrols.net60/2022.1.222/ui.for.winforms.allcontrols.net60.2022.1.222.nupkg 235ms
  GET https://nuget.telerik.com/v3/package/system.management/index.json
  GET https://nuget.org/FindPackagesById()?id='System.Management'&semVerLevel=2.0.0

....

followed by many more "NotFound" messages.

How to reproduce:

Add a webcam control to the form and set its ControlPanelHeight property. Close the designer and try to open it. Visual Studio crashes and closes.

While working with the Ribbon in a RadRibbonForm, I inadvertently removed a ribbon tab. I started recreating the ribbon tab I removed (and all of the child objects). When I got to creating and naming a ribbon button, it notified me that a control with that name already existed. It appeared that child objects, of the ribbon tab I removed, had not been removed from the form.

I tried to select the existing control from the pull-down on the top of the properties window (to find a way to remove it) and Visual Studio 2022 crashed to desktop. I hadn't saved the form I was working on, so it's mostly messed up in the project (the UI is missing), and I will have to delete what is there and start over.